Bump mamba-org/provision-with-micromamba from 15 to 16

Bumps [mamba-org/provision-with-micromamba](https://github.com/mamba-org/provision-with-micromamba) from 15 to 16.
- [Release notes](https://github.com/mamba-org/provision-with-micromamba/releases)
- [Commits](mamba-org/provision-with-micromamba@v15...v16)

---
updated-dependencies:
- dependency-name: mamba-org/provision-with-micromamba
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/tests.yml

@@ -47,7 +47,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Setup Micromamba environment
-      uses: mamba-org/provision-with-micromamba@v15
+      uses: mamba-org/provision-with-micromamba@v16
       with:
         environment-file: false
         environment-name: ci